Stuffing-box



(No Model.)

N. DUDOIRE. STUPFING BOX. No. 464,935. Patented Dec. 8, 1891.

Z a/ a m I I r f e 2 v IE Amummnun UNITED STATES PATENT ()FFICE.-

NARCISE DUDOIRE, OF \VATERVLIET, NEIV YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO MARY ELLA VAN OSDEL, OF CHICAGO, ILLINOIS.

STU FFlNG-BOX.

SPECIFICATION forming part of Letters Patent No. 464,935, dated December 8, 1891.

Application filed February 18, 1889. Renewed June 8, 1891. Serial No. 395,489. (No model.)

T0 or whom, it may concern:

Be it known thatI, NARCISE DUDOIRE, a citizen of the United States, residing at WVatervliet, in the county of Albany and State of New York, have invented a new and useful Improvement in Stuffing-Boxes, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 is a longitudinal section. Fig. 2 is a cross-section at line 2 of Fig. 1, partly broken out. Fig. 3 is a detached and enlarged wood section.

The object of this invention is to improve the construction and operation of stuflingboxes for steam piston-rods,'pump and valve rods, and for such other uses as require stu ing-boxes; and its nature consists in the improvement hereinafter described and claimed as new.

box.

a is an end flange.

b is part of an end plate for a steam or other cylinder.

0 is the pressure-plate or end cap.

d is a section of a piston-rod.

e are bolts.

f are ungrooved disks or rings.

g are wood sections used in forming wooden rings.

h is an interior groove in the wooden sections.

I; are lead rings.

The stuffing-box a, with this cap 0, is made in the usual manner, the cap being bolted to the flange a by the bolts e in the usual manner. In forming the interior of the stuffingboX I first apply an ungr ooved ring f, and then apply two or more grooved wooden see- In the drawings, a indicates the stuffing tions 9, out with the grain of the wood, as indicated in Fig. I then apply another ring, against which the inner projection of the cap or pressure-plate c rests with. such pressureas may be given it by the screws or bolts (2. For a stufing-box of considerable length it will be advisable to interpose the rings f between the grooved ones; but for a short one the grooved rings may be placed together, as shown. I form my rings of sections out sidewise with the grain for the purpose of obtaining the advantage of the swelling of the wood when steam or water is applied to move the piston-rod cl, and in this mannerI obtain a perfectly tight packing for the box.

In order to obtain a further improved wearingsurface for the packing so formed, I groove the wood sections, as shown in Figs. 1 and 3, and fill the grooves with lead, Babbitt metal, or other soft metal suitable to form a wearing-surface for a piston-rod, and thus, when the Wooden sections are placed in position, additional soft-metal rings are formed as a part of the packing around the pistonrod, which gives an improved bearing and wearing surface for such rod. The rings f may be made of ungrooved or solid wood sections out with the grain of the Wood, as described, and, if desired, the end rings may be made of metal.

WV'nat I claim as new, and desire to secure 

